When the lac operon controls the expression of proteins in the E.coli cell that can break down lactose into two sugars, glucose and galactose. When lactose is present, it binds to the repressor that typically sits on the lac operon, changing the repressor's conformation such that it can no longer bind to the lac operon. Because of this, RNA polymerase can now transcribe the gene into mRNA, <span>which in turn is translated into the proteins that can break down lactose.</span>
Answer:
The correct answer is - Swimmerets.
Explanation:
Swimmerets are small paddle-like appendages that are modified pairs of legs near the rare. or attached to the abdomen. These paddle-like appendages are help crabs to swim and also helps in carrying and aerating eggs.
These are present in lobster, and shrimps as well as swimming crabs. These are the modification of the legs of the crabs in order to better swimming and brooding of the eggs.
